Mail-Tester
Send-a-message spam and authentication scoring for pre-send QA.
Overview
Send-a-message spam and authentication scoring for pre-send QA.
Vendor: Mail-Tester
Primary purpose
Score a real outbound message for spam signals and authentication results.
Best for
- Pre-send QA of templates and auth alignment
Common use cases
- Confirm SPF/DKIM/DMARC on a sample send
- Catch obvious spam-filter triggers before a campaign
Advantages
- Simple workflow
- Combines auth and content signals
Limitations
- Single vantage point — not full inbox placement
- Scores are directional, not provider guarantees
When not to use it
- You need multi-provider inbox placement sampling at scale
- You are testing with highly sensitive message content
Pricing
Limited free tests; paid for higher volume.
Official website
Inputs and outputs
Typical inputs
- Outbound test message to a provided address
Typical outputs
- Score
- Auth results
- Content findings
Privacy notes
- Do not send confidential or regulated content to third-party test inboxes.
Related learning
Related problems
- Broken DKIM key rotation
- DKIM body hash mismatch
- DKIM key too short
- DKIM passes but DMARC fails
- DKIM public key invalid
- DKIM selector not found
- DKIM signature missing
- DKIM signing-domain mismatch
- DKIM verification failure
- Broken SPF include
- Forwarded email fails SPF
- Incorrect IP authorization
- Invalid SPF mechanism
- Multiple SPF records
- SPF passes but DMARC fails
- SPF PermError
- SPF record missing
- SPF TempError
- Too many DNS lookups